scholarly journals Ascorbic acid extends replicative life span of human embryonic fibroblast by reducing DNA and mitochondrial damages

2007 ◽  
Vol 1 (2) ◽  
pp. 105 ◽  
Author(s):  
Won-Sang Hwang ◽  
Seong-Hoon Park ◽  
Hyun-Seok Kim ◽  
Hong-Jun Kang ◽  
Min-Ju Kim ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Life Span ◽  
Replicative Life Span ◽  
Human Embryonic Fibroblast ◽  
Embryonic Fibroblast

Higher DNA repair activity is related with longer replicative life span in mammalian embryonic fibroblast cells

2011 ◽  
Vol 12 (6) ◽  
pp. 565-579 ◽  
Author(s):  
Seong-Hoon Park ◽  
Hong-Jun Kang ◽  
Hyun-Seok Kim ◽  
Min-Ju Kim ◽  
Jee-In Heo ◽  
...  
Keyword(s):  
Dna Repair ◽  
Life Span ◽  
Fibroblast Cells ◽  
Replicative Life Span ◽  
Repair Activity ◽  
Embryonic Fibroblast

Telomerase Alone Extends the Replicative Life Span of Human Skeletal Muscle Cells Without Compromising Genomic Stability

2003 ◽  
Vol 14 (15) ◽  
pp. 1473-1487 ◽  
Author(s):  
Martha Wootton ◽  
Karen Steeghs ◽  
Diana Watt ◽  
June Munro ◽  
Katrina Gordon ◽  
...  
Keyword(s):  
Skeletal Muscle ◽  
Life Span ◽  
Human Skeletal Muscle ◽  
Genomic Stability ◽  
Muscle Cells ◽  
Skeletal Muscle Cells ◽  
Replicative Life Span ◽  
Human Skeletal Muscle Cells

scholarly journals Loss of Ubp3 increases silencing, decreases unequal recombination in rDNA, and shortens the replicative life span in Saccharomyces cerevisiae

2014 ◽  
Vol 25 (12) ◽  
pp. 1916-1924 ◽  
Author(s):  
David Öling ◽  
Rehan Masoom ◽  
Kristian Kvint
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Rna Polymerase ◽  
Life Span ◽  
Rna Polymerase Ii ◽  
Ribosomal Dna ◽  
Genetic Evidence ◽  
Wild Type ◽  
Replicative Life Span ◽  
Unequal Recombination

Ubp3 is a conserved ubiquitin protease that acts as an antisilencing factor in MAT and telomeric regions. Here we show that ubp3∆ mutants also display increased silencing in ribosomal DNA (rDNA). Consistent with this, RNA polymerase II occupancy is lower in cells lacking Ubp3 than in wild-type cells in all heterochromatic regions. Moreover, in a ubp3∆ mutant, unequal recombination in rDNA is highly suppressed. We present genetic evidence that this effect on rDNA recombination, but not silencing, is entirely dependent on the silencing factor Sir2. Further, ubp3∆ sir2∆ mutants age prematurely at the same rate as sir2∆ mutants. Thus our data suggest that recombination negatively influences replicative life span more so than silencing. However, in ubp3∆ mutants, recombination is not a prerequisite for aging, since cells lacking Ubp3 have a shorter life span than isogenic wild-type cells. We discuss the data in view of different models on how silencing and unequal recombination affect replicative life span and the role of Ubp3 in these processes.

scholarly journals Stochastic Variation in Telomere Shortening Rate Causes Heterogeneity of Human Fibroblast Replicative Life Span

2004 ◽  
Vol 279 (17) ◽  
pp. 17826-17833 ◽  
Author(s):  
Carmen Martin-Ruiz ◽  
Gabriele Saretzki ◽  
Joanne Petrie ◽  
Juliane Ladhoff ◽  
Jessie Jeyapalan ◽  
...  
Keyword(s):  
Life Span ◽  
Human Fibroblast ◽  
Stochastic Variation ◽  
Telomere Shortening ◽  
Replicative Life Span ◽  
Shortening Rate

A comparison of the proliferative and replicative life span kinetics of cell cultures derived from monozygotic twins

In Vitro ◽  
1981 ◽  
Vol 17 (1) ◽  
pp. 20-27 ◽  
Author(s):  
J. M. Ryan ◽  
D. G. Ostrow ◽  
Xandra O. Breakefield ◽  
Elliot S. Gershon ◽  
Leo Upchurch
Keyword(s):  
Life Span ◽  
Cell Cultures ◽  
Monozygotic Twins ◽  
Replicative Life Span ◽  
Kinetics Of

scholarly journals Perinuclear Cohibin Complexes Maintain Replicative Life Span via Roles at Distinct Silent Chromatin Domains

2011 ◽  
Vol 20 (6) ◽  
pp. 867-879 ◽  
Author(s):  
Janet N.Y. Chan ◽  
Betty P.K. Poon ◽  
Jayesh Salvi ◽  
Jonathan B. Olsen ◽  
Andrew Emili ◽  
...  
Keyword(s):  
Life Span ◽  
Silent Chromatin ◽  
Chromatin Domains ◽  
Replicative Life Span

Chronologic and physiologic age affect replicative life-span of fibroblasts from diabetic, prediabetic, and normal donors

Science ◽  
1978 ◽  
Vol 199 (4330) ◽  
pp. 781-782 ◽  
Author(s):  
S Goldstein ◽  
E. Moerman ◽  
J. Soeldner ◽  
R. Gleason ◽  
D. Barnett
Keyword(s):  
Life Span ◽  
Replicative Life Span

scholarly journals Reduced Ssy1-Ptr3-Ssy5 (SPS) Signaling Extends Replicative Life Span by Enhancing NAD+Homeostasis inSaccharomyces cerevisiae

2015 ◽  
Vol 290 (20) ◽  
pp. 12753-12764 ◽  
Author(s):  
Felicia Tsang ◽  
Christol James ◽  
Michiko Kato ◽  
Victoria Myers ◽  
Irtqa Ilyas ◽  
...  
Keyword(s):  
Life Span ◽  
Replicative Life Span
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